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![Tom Rini](/assets/img/avatar_default.png)
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
168 lines
4.0 KiB
C
168 lines
4.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2016-2017 Texas Instruments, Inc.
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*/
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#include <common.h>
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#include <linux/libfdt.h>
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#include <fdt_support.h>
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#include <asm/omap_common.h>
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#include <asm/omap_sec_common.h>
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#ifdef CONFIG_TI_SECURE_DEVICE
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/* Give zero values if not already defined */
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#ifndef TI_OMAP5_SECURE_BOOT_RESV_SRAM_SZ
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#define TI_OMAP5_SECURE_BOOT_RESV_SRAM_SZ (0)
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#endif
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#ifndef CONFIG_SECURE_RUNTIME_RESV_SRAM_SZ
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#define CONFIG_SECURE_RUNTIME_RESV_SRAM_SZ (0)
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#endif
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int ft_hs_disable_rng(void *fdt, bd_t *bd)
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{
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const char *path;
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int offs;
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int ret;
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/* Make HW RNG reserved for secure world use */
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path = "/ocp/rng";
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offs = fdt_path_offset(fdt, path);
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if (offs < 0) {
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debug("Node %s not found.\n", path);
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return 0;
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}
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ret = fdt_setprop_string(fdt, offs,
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"status", "disabled");
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if (ret < 0) {
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printf("Could not add status property to node %s: %s\n",
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path, fdt_strerror(ret));
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return ret;
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}
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return 0;
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}
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#if (CONFIG_TI_SECURE_EMIF_TOTAL_REGION_SIZE != 0)
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/*
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* fdt_pack_reg - pack address and size array into the "reg"-suitable stream
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*/
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static int fdt_pack_reg(const void *fdt, void *buf, u64 address, u64 size)
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{
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int address_cells = fdt_address_cells(fdt, 0);
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int size_cells = fdt_size_cells(fdt, 0);
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char *p = buf;
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if (address_cells == 2)
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*(fdt64_t *)p = cpu_to_fdt64(address);
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else
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*(fdt32_t *)p = cpu_to_fdt32(address);
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p += 4 * address_cells;
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if (size_cells == 2)
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*(fdt64_t *)p = cpu_to_fdt64(size);
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else
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*(fdt32_t *)p = cpu_to_fdt32(size);
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p += 4 * size_cells;
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return p - (char *)buf;
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}
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int ft_hs_fixup_dram(void *fdt, bd_t *bd)
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{
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const char *path, *subpath;
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int offs, len;
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u32 sec_mem_start = get_sec_mem_start();
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u32 sec_mem_size = CONFIG_TI_SECURE_EMIF_TOTAL_REGION_SIZE;
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fdt32_t address_cells = cpu_to_fdt32(fdt_address_cells(fdt, 0));
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fdt32_t size_cells = cpu_to_fdt32(fdt_size_cells(fdt, 0));
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u8 temp[16]; /* Up to 64-bit address + 64-bit size */
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/* Delete any original secure_reserved node */
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path = "/reserved-memory/secure_reserved";
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offs = fdt_path_offset(fdt, path);
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if (offs >= 0)
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fdt_del_node(fdt, offs);
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/* Add new secure_reserved node */
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path = "/reserved-memory";
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offs = fdt_path_offset(fdt, path);
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if (offs < 0) {
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debug("Node %s not found\n", path);
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path = "/";
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subpath = "reserved-memory";
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offs = fdt_path_offset(fdt, path);
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offs = fdt_add_subnode(fdt, offs, subpath);
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if (offs < 0) {
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printf("Could not create %s%s node.\n", path, subpath);
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return 1;
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}
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path = "/reserved-memory";
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offs = fdt_path_offset(fdt, path);
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fdt_setprop(fdt, offs, "#address-cells", &address_cells, sizeof(address_cells));
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fdt_setprop(fdt, offs, "#size-cells", &size_cells, sizeof(size_cells));
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fdt_setprop(fdt, offs, "ranges", NULL, 0);
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}
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subpath = "secure_reserved";
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offs = fdt_add_subnode(fdt, offs, subpath);
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if (offs < 0) {
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printf("Could not create %s%s node.\n", path, subpath);
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return 1;
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}
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fdt_setprop_string(fdt, offs, "compatible", "ti,secure-memory");
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fdt_setprop_string(fdt, offs, "status", "okay");
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fdt_setprop(fdt, offs, "no-map", NULL, 0);
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len = fdt_pack_reg(fdt, temp, sec_mem_start, sec_mem_size);
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fdt_setprop(fdt, offs, "reg", temp, len);
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return 0;
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}
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#else
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int ft_hs_fixup_dram(void *fdt, bd_t *bd) { return 0; }
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#endif
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int ft_hs_add_tee(void *fdt, bd_t *bd)
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{
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const char *path, *subpath;
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int offs;
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extern int tee_loaded;
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if (!tee_loaded)
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return 0;
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path = "/firmware";
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offs = fdt_path_offset(fdt, path);
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if (offs < 0) {
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path = "/";
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offs = fdt_path_offset(fdt, path);
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if (offs < 0) {
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printf("Could not find root node.\n");
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return 1;
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}
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subpath = "firmware";
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offs = fdt_add_subnode(fdt, offs, subpath);
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if (offs < 0) {
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printf("Could not create %s node.\n", subpath);
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return 1;
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}
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}
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subpath = "optee";
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offs = fdt_add_subnode(fdt, offs, subpath);
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if (offs < 0) {
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printf("Could not create %s node.\n", subpath);
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return 1;
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}
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fdt_setprop_string(fdt, offs, "compatible", "linaro,optee-tz");
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fdt_setprop_string(fdt, offs, "method", "smc");
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return 0;
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}
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#endif
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